But their stigmas differed almost exactly in the same
manner as in the last species; the papillae on the long-styled stigma being
longer than those on the short-styled, in the ratio of 100 to 42. My son
measured nine pollen-grains from the long-styled, and the same number from the
short-styled form; and the mean diameter of the former was to that of the latter
as 100 to 81. Considering this difference, as well as that between the stigmas
of the two forms, there can be no doubt that this species is heterostyled. So
probably is Gilia nudicaulis, which likewise belongs to the Leptosiphon section
of the genus, for I hear from Professor Asa Gray that in some individuals the
style is very long, with the stigma more or less exserted, whilst in others it
is deeply included within the tube; the anthers being always seated in the
throat of the corolla.
Phlox subulata (Polemoniaceae).
Professor Asa Gray informs me that the greater number of the species in this
genus have a long pistil, with the stigma more or less exserted; whilst several
other species, especially the annuals, have a short pistil seated low down
within the tube of the corolla. In all the species the anthers are arranged one
below the other, the uppermost just protruding from the throat of the corolla.
In Phlox subulata alone he has "seen both long and short styles; and here the
short-styled plant has (irrespective of this character) been described as a
distinct species (P.
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